While most of these microorganisms are commonly found in or on our body, some that were found on the Austins 'floor can produce disease -- such as shigella, staphylococcus pneumonia, or staphylococcus aureus -- if they are inhaled, ingested or touch skin breaks, Eichenbaum said.

FDA data show that imported fresh produce is three times more likely to be contaminated with food borne pathogens such as salmonella and shigella than domestic produce and four times as likely to have pesticide levels that exceed U.S. standards.